optimize the judge of invalide notification.number (#22658)
Don't bother fetching genesis Co-authored-by: wuff1996 <33193253+wuff1996@users.noreply.github.com>
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@ -391,13 +391,14 @@ func (f *BlockFetcher) loop() {
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blockAnnounceDOSMeter.Mark(1)
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break
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}
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if notification.number == 0 {
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break
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}
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// If we have a valid block number, check that it's potentially useful
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if notification.number > 0 {
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if dist := int64(notification.number) - int64(f.chainHeight()); dist < -maxUncleDist || dist > maxQueueDist {
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log.Debug("Peer discarded announcement", "peer", notification.origin, "number", notification.number, "hash", notification.hash, "distance", dist)
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blockAnnounceDropMeter.Mark(1)
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break
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}
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if dist := int64(notification.number) - int64(f.chainHeight()); dist < -maxUncleDist || dist > maxQueueDist {
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log.Debug("Peer discarded announcement", "peer", notification.origin, "number", notification.number, "hash", notification.hash, "distance", dist)
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blockAnnounceDropMeter.Mark(1)
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break
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}
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// All is well, schedule the announce if block's not yet downloading
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if _, ok := f.fetching[notification.hash]; ok {
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